Home/CVE/A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All ver
CVE

CVE-2020-15783

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All ver

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.

HIGH · CVSS 7.5 EPSS 0.0019
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

12
siemens sinumerik 840d sl firmwareall versions
siemens simatic s7-300 cpu 312 firmwareall versions
siemens simatic s7-300 cpu 314 firmwareall versions
siemens simatic s7-300 cpu 315-2 dp firmwareall versions
siemens simatic s7-300 cpu 315-2 pn firmwareall versions
siemens simatic s7-300 cpu 317-2 pn firmwareall versions
siemens simatic s7-300 cpu 317-2 dp firmwareall versions
siemens simatic s7-300 cpu 315f-2 dp firmwareall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · productcert@siemens.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Nov 2020 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

2
siemens-csafSSA-492828
cisa-csafcisa-csaf-csaf_files-OT-white-2020-icsa-20-315-04
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-492828.pdfMitigationVendor Advisory
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